| 摘要 |
The invention is of a linear screw and/or circulating ball actuator comprising a female screw (1) in which there is a return duct (9) for the balls (7), closed by two head walls (3,4) in which there are passages (11) which connect said duct with the helicoidal groove (5), and in which both the female screw and the head walls are sintered. <IMAGE> |
